Most people do not need to avoid mineral water completely, but certain groups should be cautious. Individuals with hypertension, heart failure, or kidney disease should limit high-sodium mineral waters or follow clinician guidance. People with reflux, gastritis, or ulcers may find carbonated drinks worsen symptoms. If you have a history of kidney stones, hydration is generally helpful, but mineral composition should be individualized. For infants and young children, high-mineral waters are typically not recommended as routine beverages; pediatric guidance is different.